Introduction to Alkanes

Q.

State the sources of Alkanes.

Q. Write the IUPAC name of Benzene

Q.

Iron does not burn on heating but iron fillings burn vigorously when sprinkled in the flame of the burner . Why? Give reason.

Q.

Write the structural formula for butane.

Q. Question 29
The first member of alkyne homologous series is
(a) ethyne
(b) ethene
(c) propyne
(d) methane

Q. What are saturated carbon compounds ? Give two examples.

Q. The substance(s) which is/are obtained during the destructive distillation of wood are

1. Tar
2. Turpentine
3. Charcoal
4. Ethanol

Q. Give the IUPAC names of the compounds on the right. The IUPAC names of the compounds on the left are to guide you for giving the correct IUPAC names of the compounds on the right. [5 MARKS]

Q.

If you hold a piece of iron wire with a pair of tongs inside a candle flame or a bunsen burner flame, what will you observe? Will it produce a flame?

Q. Give the names and structural formula of the first three members of homologous series of alkanes. [3 MARKS]

Q. IUPAC name of given compound:

1. $5-(1,1-$ Dimethyl Ethyl) $-6-$ Ethyl decane
2. $5-Ethyl-6-(1,1-$ Dimethyl Ethyl) decane
3. $6-Ethyl-5-(1,1-$ Dimethyl Ethyl) decane
4. $6-(1,1-$ Dimethyl Ethyl) $-5$ Ethyl decane

Q.

LPG stands for liquefied petroleum gas. Varieties of LPG are marketed including a mixture of propane (60%) and butane (40%). If 10 litre of this mixture is burnt, find the total volume of carbon dioxide gas added to the atmosphere. Combustion reactions can be represented as:

1. 46

2. 30

3. 51

4. 34

5. 40

Q. Those substance which can burn are called combustible substance.all kind of substance are burn by friction . The substances which are very high ignition temperature like Stones and meteoroids . Why we says it non combustible Substance.

Q. what are alicyclic compounds

Q. Question 2
Butanone is a four-carbon compound with the functional group:
(a) Carboxylic acid
(b) Aldehyde
(c) Ketone
(d) Alcohol

Q.

Give the general formula of alkanes.

Q. What is rectified spirit?

Q. What is th molarity of benzene

Q.

A series of hydrocarbons with the same general formula is known as

1. Catenation of carbon

2. Homologous series

3. Allotropes of carbon

4. Isotopes of carbon

Q. What are the constituent of petroleum?

1. Alkanes
2. Both a and b
3. Cycloalkanes
4. None of these

Q.

What are the main two allotropes of carbon? Distinguish these two allotropes on the basis of hardness and electrical conduction.

Q.

What is the IUPAC name of (CH3)2CHCH2CH2Br

Q.

IUPAC name of the following compound is $C{H}_3-CH=CH-C\equiv$?

1. 5-Pentyn-3-ene

2. 3-Penten-1-yne

3. 1-Pentyn-3-ene

4. None of these

Q.

Match the Following:

$\begin{array}{cc}\text{Column-I (Hydrocarbon)}& \text{Column-II (Molecular Formula)}\\ \left(A\right)Methane& \left(P\right)C_2{H}_6\\ \left(B\right)Ethane& \left(Q\right)C_4{H}_{10}\\ \left(C\right)Propane& \left(R\right)C{H}_4\\ \left(D\right)Butane& \left(S\right)C_3{H}_8\end{array}$

Q. If hydrogen is a combustible gas, how is it able to put off a burning splinter with a pop sound?

Q. (a) What are hydrocarbons? Give examples.
(b) Give the structural difference between saturated and unsaturated hydrocarbons with two examples of each.
[3 Marks]

Q. QZ2) The organic chloro compound which shows complete stereochemistry inversion during a SN2 rxn is A) (CH3)3CCl B) (CH3)2CHCl C) CH3CL D) (C2H5)2CHCl

Q. What are fullerenes ? Name the most common fullerene.

Q. The following structural formula belongs to which carbon compound?

Q. How will you prepare benzyl alcohol from toluene?